The pro-hunting group believes the poster will win support for their cause but RSPCA officials described it as a "last ditch attempt" to keep hunting going.

In the poster, the blonde 25-year-old is shown wearing her full riding outfit with the slogan beneath reading: "Now they hate her?"

In an adjacent photograph, she is dressed in her NHS nursing uniform, with a slogan saying: "Now they don't?"

Beneath the photos it reads "59% say keep hunting" - a figure taken from a survey commissioned by the Countryside Alliance last December.

Four hundred posters will be plastered at selected sites across the country as part of the alliance's high-profile campaign.

Miss Bell described her photo shoot as daunting but added: "We (foxhunters) are just a normal bunch of people.

"We are nurses, plumbers, just ordinary people who love the countryside and are aware of land management."

Miss Bell, who lives near the Warwickshire-Solihull border added: "There are much more important things that should be at the top of the government's list rather than hunting like the NHS, education and law and order.

"I cannot understand why the government should spend so much time on hunting when there are so many more important areas."

Miss Bell is a member of the Worcestershire Hunt and has been riding since she was 12.

This campaign coincides with the reintroduction of the Hunting Bill, due to reach its final report and third reading stage in the Commons on Monday.

The Bill is designed to ban hare-coursing and stag-hunting and allows fox-hunting to continue under strict licence.

A spokeswoman for the RSPCA said: "We do acknowledge it is a very clever advert, a very clever approach getting an ordinary person into the advert.

"But the bottom line is hunting is cruel and that is why we want to end it - that reality will never change.

"It does not matter whether it is a doctor, or a nurse, hunting is still cruel. We expect that next week MPs will consign hunting to history."